--- service: b.root-servers.net start-period: 2016-06-02T00:00:00Z end-period: 2016-06-02T23:59:59Z metric: traffic-volume dns-udp-queries-received-ipv4: 2655924509 dns-udp-queries-received-ipv6: 287756944 dns-tcp-queries-received-ipv4: 46577527 dns-tcp-queries-received-ipv6: 1377123 dns-udp-responses-sent-ipv4: 2580904017 dns-udp-responses-sent-ipv6: 286910057 dns-tcp-responses-sent-ipv4: 46236412 dns-tcp-responses-sent-ipv6: 1376907